Patents by Inventor Leif Urban Folke Thorsell

Leif Urban Folke Thorsell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4112231
    Abstract: A process is provided for the condensation of epoxides with organic compounds having an active hydrogen atom, such as alcohols, polyols, and amines, in the presence of a neutral inorganic salt selected from the group consisting of sodium fluoborate, magnesium perchlorate, calcium perchlorate, manganese perchlorate, nickel perchlorate and zinc perchlorate.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: September 5, 1978
    Assignee: Berol Kemi AB
    Inventors: Bengt John Gustaf Weibull, Leif Urban Folke Thorsell